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upperwing
From Wiktionary, the free dictionary
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English
Etymology
Noun
upperwing (plural upperwings)
- The upper part of a wing of a bird or butterfly
- 2015, Bob Flood, Ashley Fisher, Martin Elliott, Pterodroma Petrels: North Atlantic Seabirds:
- The original article (which see) mentions that the primary shafts on the upperwings lacked any whitish coloration.
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